512423 has 4 divisors (see below), whose sum is σ = 517320. Its totient is φ = 507528.

The previous prime is 512419. The next prime is 512429. The reversal of 512423 is 324215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 512423 - 2² = 512419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2288 + ... + 2501.

It is an arithmetic number, because the mean of its divisors is an integer number (129330).

2⁵¹²⁴²³ is an apocalyptic number.

512423 is a deficient number, since it is larger than the sum of its proper divisors (4897).

512423 is a wasteful number, since it uses less digits than its factorization.

512423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896.

The product of its digits is 240, while the sum is 17.

The square root of 512423 is about 715.8372720109. The cubic root of 512423 is about 80.0220251856.

Adding to 512423 its reverse (324215), we get a palindrome (836638).

The spelling of 512423 in words is "five hundred twelve thousand, four hundred twenty-three".